What will happen if a solution of sodium hydrocarbonate is heated ? Give the equation of the reaction involved.

When a solution of sodium hydrocarbonate (sodium hydrogencarbonate) is heated, sodium carbonate and water are formed with the evolution of carbon dioxide gas.

$\underset{\begin{smallmatrix} 
 \,\,\,\,\,\,\,\,\,\,\,\text{Sodium} \\ 
 \text{hydrogencarbonate} 
\end{smallmatrix}}{\mathop{2NaHC{{O}_{3}}}}\,\xrightarrow{\Delta }\,$ $\underset{\begin{smallmatrix} 
 \text{Sodium} \\ 
 \text{carbonate} 
\end{smallmatrix}}{\mathop{N{{a}_{2}}C{{O}_{3}}}}\,\,+\underset{\text{Water}}{\mathop{{{H}_{2}}O}}\,\,+\,\underset{\begin{smallmatrix} 
 \text{Carbon} \\ 
 \text{dioxide} 
\end{smallmatrix}}{\mathop{C{{O}_{2}}}}\,\uparrow $